Rundisney does a great job of coordinating their races. I did the 5k, 10k, and Half (19.3 challenge). While I understand that due to the number of runners that are there, traffic is tough to coordinate, but sitting in a cold corral for 90+ min pre-race is really not the most enjoyable (I know there's plenty of pre-race entertainment, but if you want to secure your choice place in the corral, you're stuck waiting). Overpack for all kinds of weather. Don't be afraid to bring "throwaway layers." Don't feel like you have to stay on Disney property (I've stayed near Disney Springs and in Kissimmee) and had no issues any time. Plenty of great course support and picture opportunities. If you like a fun party atmosphere, running with lots of people, and Disney, this (well any of the rD races) is a bucket list-type race.